RESUMO
The Brazilian population is one of the most heterogeneous populations of the world, formed mainly by an admixture of European, African and Native American populations. Brazil is the fifth largest country in the world (8,511,960 km(2)), being divided into five geographical regions. This study provides population genetic data of up to 137,161 unrelated individuals representing the entire Brazilian territory. Allelic frequencies and other population data analysis are reported for the 15 autosomal STR loci included in the PowerPlex®16 kit (Promega Corporation, Madison, WI, USA). In order to guarantee that individuals were not related, we have considered only F1 data from couples undergoing paternity testing. The number of individuals genotyped for each locus was: CSF1PO (113,526); D3S1358 (135,133); D5S818 (135,181); D7S820 (137,136); D8S1179 (134,211); D13S317 (137,161); D16S539 (136,942); D18S51 (136,739); D21S11 (130,014); FGA (135,839); Penta D (110,333); Penta E (128,055); TH01 (112,695); TPOX (123,102); vWA (127,415). Allele sizes ranged from 1 to 48.2. Statistic parameters (PD, PIC and Ho; considering values ≥0.75) suggest that markers D13S317, D16S539, D18S51, D21S11, D7S820, D8S1179, Penta D, Penta E, TH01, FGA and vWA were more informative for genetic identification purposes in the Brazilian population.
Assuntos
Frequência do Gene , Genética Populacional , Repetições de Microssatélites , Brasil , Impressões Digitais de DNA/métodos , Eletroforese Capilar , Loci Gênicos , Genótipo , Humanos , Reação em Cadeia da PolimeraseRESUMO
DNA isolation is the initial step of most genetic studies, and ideally it should use a reliable and non-invasive method. Buccal samples are adequate for such purposes, being painless, easy to collect and a very reliable DNA source. FTA Elute Cards are relatively new on the market and are designed for rapid blood DNA extraction, in which DNA is solubilized in water, instead of attached to the paper matrix. In this study, we sought to test if FTA Elute Cards are suitable for buccal DNA extraction. Furthermore, several time and temperature conditions were analyzed in order to determine the best concentration/time ratio. Twenty-five different conditions were tested in quadruplicate and extracted DNA was quantified by real-time PCR.